/*
 * 变量演示
 */

#include <stdio.h>

int main () {
	int num1 = 1, num2 = 9;
	printf("%d * %d = %d\n",num1, num2, num1 * num2);
	printf("%d * %d = %d\n",num1 + 1, num2 - 1, (num1 + 1) * (num2 - 1));
	printf("%d * %d = %d\n",num1 + 2, num2 - 2, (num1 + 2) * (num2 - 2));
	printf("%d * %d = %d\n",num1 + 3, num2 - 3, (num1 + 3) * (num2 - 3));
	printf("%d * %d = %d\n",num1 + 4, num2 - 4, (num1 + 4) * (num2 - 4));
	return 0;
}
